import Vue from 'vue';
import VueRouter from 'vue-router';
import Login from '../components/Login.vue';
import Home from '../components/Home.vue';

Vue.use(VueRouter);

const routes = [
  { path: '/', redirect: '/login' },
  { path: '/login', component: Login },
  { path: '/home', component: Home }
];

const router = new VueRouter({
  routes
});

// 挂载路由导航守卫
router.beforeEach((to, form, next) => {
  // to 将要访问的路径
  // from 代表从哪个路径跳转过来
  // next()放行  next('/login')强制跳转
  if (to.path === '/login') return next();
  // 获取token
  const token = sessionStorage.getItem('token');
  if (!token) return next('/login');
  next();
});

export default router;